Relationship between job control,work pressure and strain: Studies in the USA and in The Netherlands

The purpose of this study was to test a model of job control, work pressure and strain in two samples in the USA and in The Netherlands. According to the proposed model, work pressure has a mediating role between job control and worker strain. The present model specifies three types of job control: task or instrumental control, conceptual or resource control, and decision organization control. Task and resource control are assumed to reduce the stressor of work pressure which, in turn, is related to high strain. Organization control is assumed to be positively related to work pressure. The model was tested in two samples : one US sample of 273office employees and one Dutch sample of 958 employees in a variety of jobs. The same measure of job control was used in both samples. Resultspartially confirm the proposed model. As predicted by the proposed model, high task control was related to low work pressure, whereas high organization control was related to high work pressure. The effects of task control and organization control on strain were mediated by work pressure for the measure of anxiety in the US sample and for the measure of stress in the Dutch sample. However, the mediating effect of work pressure was not found for job satisfaction in both samples, for the measure of mood disturbances in the US sample and for the measure of sick days in the Dutch sample. The proposed model is only partially confirmed by the results. These results confirm the importance of differentiating between different dimensions of job control.     

Chronic strain, daily work stress and pain among workers with rheumatoid arthritis: Does job stress make a bad day worse?

The structure of the job and the daily experience of work are challenges for workers with rheumatoid arthritis. Yet little is known about how these two factors interact to put workers with chronic pain at risk for worse pain on a given day. This exploratory 20 workday diary study of 27 workers with rheumatoid arthritis used hierarchical linear modelling to examine how the structure of the job and neuroticism moderate the relationship between daily undesirable work events (daily stressors), and pain reports within a day. On days with more undesirable work events compared to days with fewer events, individuals with jobs associated with job 'strain' (high demand/low control) reported greater midday pain, irrespective of neuroticism and negative mood, than workers with other combinations of demand and control. These findings demonstrate the utility of analysing fluctuating within-person relationships among pain, mood and daily work stressors within the context of the structure of the job, and helps to explain why daily work stressors result in worse health outcomes for some but not all workers with RA.     

The relationship between presenteeism and job satisfaction: A mediated moderation model using work engagement and perceived organizational support

Research on presenteeism has largely focused on its prevalence, determinants and consequences on the health of both employees and organizations. To date, few studies have examined the influence of presenteeism on workers’ attitudinal and motivational responses. Based on the Effort–Recovery Theory, this study evaluates the mediating effect of work engagement in the relationship between presenteeism and job satisfaction. Building on previous work, this study also proposes to consider perceived organizational support as a moderator of the work engagement–job satisfaction relationship. Presented in the form of a mediated moderation model, the results of bootstrapped regression analyses show three main results. First, presenteeism is negatively associated with work engagement and job satisfaction. Secondly, work engagement is one of the factors through which presenteeism influences job satisfaction. Thirdly, perceived organizational support moderates the association between work engagement and job satisfaction so that, at a low level of work engagement, feeling supported by the organization makes a difference on job satisfaction. Overall, this research is part of the limited number of studies that have focused on the interplay existing between presenteeism and its consequences in terms of job attitudes.     

The moderating role of social support in Karasek's job strain model

This paper examines whether social support is a boundary-determining criterion in the job strain model of Karasek (1979). The particular focus is the extent to which different sources of social support, work overload and task control influence job satisfaction, depersonalization and supervisor assessments of work performance. Hypotheses are tested using prospective survey data from 80 clerical staff in a university setting. Results revealed 3-way interactions among levels of support (supervisor, co-worker, non-work), perceived task control and work overload on levels of work performance and employee adjustment (self-report). After controlling for levels of negative affect in all analyses, there was evidence that high levels of supervisor support mitigated against the negative effects of high strain jobs on levels of job satisfaction and reduced reported levels of depersonalization. Moreover, high levels of non-work support and co-worker support also mitigated against the negative effects of high strain jobs on levels of work performance. The results are discussed in terms of the importance of social support networks both at, and beyond, the work context.     

Cortisol on Sunday as indicator of recovery from work: Prediction by observer ratings of job demands and control

Several considerations guided the research reported in this paper. First, recovery is pivotal for preventing stressful experiences from inducing long-term consequences. Second, cortisol levels under relaxed conditions constitute a good baseline measure. Third, there are many calls to avoid common method problems. Therefore, the Job Demands–Control (JDS) model, one of the most prominent models in occupational stress, should be tested by a combination of observation, self-report, and physiological data in terms of predicting recovery-related variables. In a sample of 53 Swiss employees, we assessed the JDS variables, demands and control, by systematic observation, fatigue at the end of work as an indicator of short-term recovery by questionnaire, and delayed recovery by baseline levels of cortisol on a Sunday under relaxing conditions. In line with expectations, regression analyses showed an impact of job demands and control on Sunday cortisol levels, and this effect was fully mediated by after work fatigue. Contrary to expectations, there was no significant interaction between job demands and control. Demonstrating that job demands and control predict after-work fatigue as well as a delayed physiological marker of recovery, these findings suggest that high after-work fatigue may entail costs to the individual’s physiological systems.     

The relationship between newcomer expectations of job stressors and adjustment to the new job

This study examined the relationship between unrealistic expectations of organizational newcomers regarding job stressors and subsequent adjustment to the new job. Using a sample of 91 new employees, measures of expected stressors (gathered prior to the first day of work) were compared with stressors reported after six months on the job. The study examined the relationship between the accuracy of expected stressors (demands) and three indicators of job adjustment: job satisfaction; job involvement; and distress symptoms. The results provided partial support for the hypothesis that newcomers who underestimate job stressors have more difficulty adjusting on the new job than do newcomers who overestimate job stressors.     

The effectiveness of input control based on aggregate versus bottleneck work loads

This study compares input control based on aggregate shop loads with that based on bottleneck resource loads. Two appropriate release mechanisms are developed and compared in flow and job shops that have various levels of a bottleneck constraint. Simulation results show that both the level of bottleneck and the flow pattern influence the effectiveness of the strategies. Release based on aggregate loads works well when shop loads are balanced or when there is a bottleneck but the flow is highly structured, as in a flow shop. Release based on bottleneck loads works best when flow patterns are less structured, as in a job shop.     

The moderating role of personality characteristics on the relationship between job insecurity and strain

The experience of job insecurity has been linked to several different outcomes, such as negative attitudes towards work and the organization, turnover intention, as well as health complaints. However, since the strength of these effects have been found to vary across studies, it is vital to identify factors that could influence the relationships. The present study examines the moderating role of three personality characteristics (negative affectivity, positive affectivity, and external locus of control) on the relation between job insecurity and outcomes (mental health complaints, job dissatisfaction, and job-induced tension). Data from 400 nurses at a Swedish acute care hospital (response rate 71%; 91% women, aged 20-68 years) showed that both job insecurity and personality were related to strain. Also, the data indicated some buffering effect of personality. Despite the gender bias of the sample, the study provides additional support for the notion that job insecurity affects strain even after controlling for individual characteristics. The study also expands the literature on job insecurity by pointing out the influence of personality characteristics on the relationship between stressors and strain.     

The distinction between work pace and working hours in the measurement of quantitative demands at work

During recent years many researchers have criticized the widely used scales on psychological job demands. For instance, they comment that in most cases different types of demand seem to be mixed in one measure. In this paper we analyse the scale on quantitative job demands in the recently developed Copenhagen Psychosocial Questionnaire (COPSOQ), with special emphasis on Differential Item Functioning (DIF). DIF refers to basic differences between groups of respondents, which may affect how they respond to questionnaire items. The data material for our study comprised a representative sample of Danish employees. The respondents were categorized into 32 specific jobs according to the International Standard Classification of Occupations (ISCO 1968). We analysed DIF with respect to the respondents' jobs with logistic regression analyses. These analyses showed that the items used in the original demand scale functioned very differently for different jobs in the population. The conclusion is that scales on quantitative demands are very sensitive to the choice of specific items. If many items on fast work pace and tempo are included in a scale, a number of blue-collar jobs will be identified as high-demand jobs. If, on the other hand, many questions on long working hours and overtime are included, the use of the scale will result in an entirely different picture. This issue has so far received little attention in occupational health psychology. The results have wide theoretical and methodological implications for research on quantitative job demands.     

The distinction between work pace and working hours in the measurement of quantitative demands at work

During recent years many researchers have criticized the widely used scales on psychological job demands. For instance, they comment that in most cases different types of demand seem to be mixed in one measure. In this paper we analyse the scale on quantitative job demands in the recently developed Copenhagen Psychosocial Questionnaire (COPSOQ), with special emphasis on Differential Item Functioning (DIF). DIF refers to basic differences between groups of respondents, which may affect how they respond to questionnaire items. The data material for our study comprised a representative sample of Danish employees. The respondents were categorized into 32 specific jobs according to the International Standard Classification of Occupations (ISCO 1968). We analysed DIF with respect to the respondents’ jobs with logistic regression analyses. These analyses showed that the items used in the original demand scale functioned very differently for different jobs in the population. The conclusion is that scales on quantitative demands are very sensitive to the choice of specific items. If many items on fast work pace and tempo are included in a scale, a number of blue-collar jobs will be identified as high-demand jobs. If, on the other hand, many questions on long working hours and overtime are included, the use of the scale will result in an entirely different picture. This issue has so far received little attention in occupational health psychology. The results have wide theoretical and methodological implications for research on quantitative job demands.     

The Job Demands-Job Control Model and absence behaviour: results of a 3-year longitudinal study

Empirical results of earlier studies only marginally supported the relevance of Karasek's Job Demands-Job Control Model for absence behaviour. Since longitudinal studies with respect to these relations were largely lacking, a four-wave panel study was carried out using data from 1755 male employees of a technical maintenance firm in the public sector. Job demands, job control, physical working conditions, and the employee's age, education, and health were measured in one year and absenteeism in the same year and in the next 3 years. Data were analysed with linear regression and Poisson regression techniques. The Poisson regression technique was superior to the linear regression technique in explaining absence. Age, health and prior absence were the best predictors of later absence behaviour. With respect to the Job Demands-Job Control Model, the main findings of the study were (1) that job control was significantly associated with a low number of simultaneous and later absence days, and (2) that, contrary to expectations, job demands were also related to a low number of simultaneous and later absence days. These results hold when age, health, education, prior absence, and working conditions are controlled for. Job control and job demands did not predict later absence frequency. In the discussion it is suggested that a high level of job demands may not only be harmful for the well-being of employees but also work as 'a pressure to attend'.     

Stress, the quality of work, and repetition strain injury in Australia

Widespread concern developed in the 1980s in Australia about repetition injuries among keyboard operators, particularly in the Australian Public Service. Government departments were found to vary in their injury rates and this research seeks to explain the variation. It is hypothesized that it is associated with differences in job stress or, more generally, the quality of work. A survey was carried out, using the Insel and Moo Work Environment Scale and certain other job stress variables and the hypothesis was confirmed. The paper draws conclusions about the need to redesign jobs in order to reduce the risk of repetition injuries.     

The association between blood pressure and work stress: The importance of measuring isolated systolic hypertension

The objective was to study whether the relationships between elevated blood pressure and (a) work stress as related to the stressor overtime, and (b) unwinding after work, depend on what kind of criteria are used for the diagnosis of hypertension. A total of 126 healthy men (aged 20-66 years) employed in white-collar jobs were tested over 24 hours by means of ambulatory blood pressure monitoring on a regular working day. Four groups were defined according to their blood pressure status: normotensives (NT), hypertensives (HT), isolated systolic hypertensives (ISH), and isolated diastolic hypertensives (IDH). No differences of age, body mass index, overtime work, and disturbed unwinding were found between the normotensives and the hypertensives. ISH was found to be related to working overtime and to disturbed unwinding but not to biological risk factors; IDH, however, was related exclusively to the biological risk factor high body mass index. Thus, significant differences associated with overtime were found between ISH and both NT and IDH, with the isolated systolic hypertensives carrying out more than twice as much overtime as the normotensives or isolated diastolic hypertensives. More men with a disturbed ability to relax and vital exhaustion were found in the ISH group than in the NT group. It seems that, in addition to the usual diagnosis of hypertension, the classification of ISH and IDH adds new information about the relationship between blood pressure elevation and both work stress and disturbed unwinding.     

The recovery paradox: Portraying the complex interplay between job stressors,lack of recovery,and poor well-being

Job stressors such as time pressure, organizational constraints, and interpersonal conflicts matter for individual well-being within organizations, both at the day level and over longer periods of time. Recovery-enhancing processes such as psychological detachment from work during nonwork time, physical exercise, and sleep have the potential to protect well-being. Although the experience of job stressors calls for effective recovery processes, empirical research shows that recovery processes actually are impaired when job stressors are high (recovery paradox). This article presents explanations for the recovery paradox, discusses moderating factors, and suggests avenues for future research.     

Assisting employees with drinking problems: Changes in mental health, job perceptions and work performance

A sample of 104 British transportation employees with alcohol-related problems were examined for changes in mental health and job perceptions before and after a company-based counselling programme. Data was mainly obtained by means of structured interviews. When clients were assessed at a 6-month follow-up, significant positive changes were found for the group as a whole in terms of context-free mental health, self- and supervisor ratings of work performance as well as measures of absenteeism. Small positive differences were observed for measures relating to perceived work demands. However, no significant differences were observed for the measures of job satisfaction and job commitment. The findings are discussed in relation to the expected client and organizational outcomes of workplace counselling interventions.     

The influences of gender and grade on perceived work stress and job satisfaction in white collar employees

A self-completion questionnaire survey was carried out, resulting in a sample of 675 white collar public sector employees. The survey examined the frequency of occurrence of work-based stressors and perceived control, and included a general measure of job satisfaction. The results revealed that higher levels of job satisfaction were reported by employees in higher grades. It was also observed that higher grades perceived more control within their working environment. No gender differenccs were found concerning reported stress problems, although significant differences were observed across grades in relation to role differentiation. Multivariate analyses revealed that grade effects were largely accounted for by differences in perceived control. Perceived control, role-based and organizational stressors as well as gender were the strongest contributors in predicting reported job satisfaction.     

The effects of JDC model on burnout and work engagement: A multiple interaction analysis

This study investigated the moderating effects of functional social support (emotional and instrumental support) on the relationship of job demand control with burnout and work engagement. In total, 297 frontline employees from a hotpot restaurant franchise in China were surveyed. The results indicated emotional support, such as caring and inspiration, mitigated the adverse effects of high demand/low control on burnout and work engagement. Instrumental support, such as giving suggestions and solving problems, only mitigated the adverse effects of burnout. Further, the high demand/low control/low emotional support work condition was the most unfavourable for work engagement and burnout; while high demand/low control/low instrumental support was the most unfavourable condition for burnout. The theoretical and managerial implications of this research have been provided to gain a deeper insight into functional social support in the job demand control model.     

The Demands-Control-Support model,locus of control and job dissatisfaction: A longitudinal study

The Job-Demands-Control model (Karasek, 1979) has been widely studied in the job stress field, but the results obtained are frequently contradictory. Therefore, some investigations have expanded the model by including social support and personality characteristics such as locus of control. However, results obtained with these elaborated models have not been conclusive either. The present study sets out to integrate both types of expansions by simultaneously including social support at work and the employee's locus of control in a longitudinal multi-national study among 542 administrative personnel from Belgium, England, Spain, Italy and Israel. Hierarchical moderated multiple regression showed a significant 4-way interaction term (Demands 2 Control 2 Social support 2 Locus of control) on the change in job dissatisfaction. This effect is qualified by the interaction between job demands and control only for an internal locus of control with high social support. Contrary to the prediction of the JDC model, which posits that high control has a buffering effect on job dissatisfaction, the study result indicates a damaging effect of excess control (perceived job control and high internal locus of control), specifically in high social support situations.     

The association between job skill discretion, decision authority and burnout

This paper reports on the relationship between dimensions of control (skill discretion and decision authority) and burnout (emotional exhaustion, depersonalization, and reduced personal accomplishment) among 164 human service workers. It examines the differential influence of job demands, control (skill discretion and decision authority) and social support (supervisor, co-workers, others) on each burnout dimension. Then it examines the moderating effects of higher skill discretion, higher decision authority, and higher social support on burnout. Low skill discretion was found to be associated with high emotional exhaustion and depersonalization and low personal accomplishment. The effects of decision authority were not statistically significant. High job demands were associated with high emotional exhaustion only. Social support (supervisor, co-worker, and others) was not associated with burnout when demographic variables and job characteristics were controlled for. Neither dimension of control moderated the impact of high job demands on burnout. Social support did not moderate the impact of high demands, low skill discretion, or low decision authority on any burnout dimension. The full model explained 44% of the variance in emotional exhaustion, 25% in depersonalization, and 42% in personal accomplishment. Despite its limitations, the study suggests that the Job Demand-Control model may provide a useful theoretical foundation for the study of burnout, but that the control dimensions need to be evaluated independently since they appear to be differentially related to the burnout dimensions.     

The association between job skill discretion,decision authority and burnout

This paper reports on the relationship between dimensions of control (skill discretion and decision authority) and burnout (emotional exhaustion, depersonalization, and reduced personal accomplishment) among 164 human service workers. It examines the differential influence of job demands, control (skill discretion and decision authority) and social support (supervisor, co-workers, others) on each burnout dimension. Then it examines the moderating effects of higher skill discretion, higher decision authority, and higher social support on burnout. Low skill discretion was found to be associated with high emotional exhaustion and depersonalization and low personal accomplishment. The effects of decision authority were not statistically significant. High job demands were associated with high emotional exhaustion only. Social support (supervisor, co-worker, and others) was not associated with burnout when demographic variables and job characteristics were controlled for. Neither dimension of control moderated the impact of high job demands on burnout. Social support did not moderate the impact of high demands, low skill discretion, or low decision authority on any burnout dimension. The full model explained 44% of the variance in emotional exhaustion, 25% in depersonalization, and 42% in personal accomplishment. Despite its limitations, the study suggests that the Job Demand-Control model may provide a useful theoretical foundation for the study of burnout, but that the control dimensions need to be evaluated independently since they appear to be differentially related to the burnout dimensions.